%0 Journal Article
%T Instantaneous characteristics of excited atom state 5s'' 4D7/2 in the copper plasma induced by laser<br>纳秒激光诱导铜等离子体中原子激发态 5s'' 4D7/2的瞬态特性研究
%A Liu Shi-Bing
%A Liu Yuan-Xing
%A He Run
%A Chen Tao
%A <br>刘世炳
%A 刘院省
%A 何润
%A 陈涛
%J 物理学报
%D 2010
%I 
%X The formation of excited atom state 5s' D7/2 and its transition process in the copper plasma induced by nanosecond pulse laser are studied by the time-resolved spectrum technology. The experimental results indicate the recombination of electron and ion and the collisions among particles each play a dominent role in forming excited atom state 5s'D7/2 at different tims during its evolvement. When the collisions among particles are severe, the excited atom state 5s' D7/2 mainly transits to low energy atom state 4p' 4 Fo9/2. 500 ns after the peak of laser pulse arriving at target surface, the excited state 5s'D7/2 transited to 4p' 4 Fo9/2 and 4p' 4 D7/2 with the same probabilities by emitting lines CuI465.11 nm and CuI529.25 nm respectively.
%K laser ablation
%K time-resolved spectrum
%K plasma radiation
%K energy transfer<br>激光烧蚀
%K 时间分辨光谱
%K 等离子体辐射
%K 能量转移
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=B03409FFE1B1C433B837A6805364E791&yid=140ECF96957D60B2&vid=6AC2A205FBB0EF23&iid=5D311CA918CA9A03&sid=0746D8C2B39E7E70&eid=E51CB82F2D3E48BE&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=16